Full dataset download script (using curl) is now available on all datasets

[fangq]

when browsing every dataset on NeuroJSON.io, one can see a new button, "Script to download all files" showing on the top of each dataset page. When clicking on it, you will get a very compact (KB scale) bash/sh script to download the full database files, see examples below

the only dependency is curl, which is, gladly, available on Windows by default, and easily installable on Linux (sudo apt-get install curl) and MacOS (brew install curl). The full size of the linked files are also reported.